We are going to learn how to deploy and configure Fluent Bit (a sub-project of FluentD) to capture the Nginx Ingress Controller logs on Kubernetes and stream the formatted logs to ElasticSearch. We can then perform the logs analytics using Kibana.
Let’s look at how can we quickly deploy a standalone ElasticSearch and Kibana using Docker Compose to start monitoring application and system logs
When come to operating Kubernetes, we need to ensure the cluster backup is one of the key operation as part of our backup strategy. We need to properly backup and secure the application data which is typically stored in persistent volumes. On the other hand, we need to backup the etcd data because it is the operational data store that is used by Kubernetes in order to operate accordingly. In this post we are looking at how to schedule the etcd data backup using out of the box Kubernetes features.
There are a few approaches to expose your applications to the world outside of Kubernetes cluster. One of them is using Ingress Controller. We are going to learn how can we use Nginx Ingress Controller to expose container applications running on top of Raspberry Pi Kubernetes cluster.
In a perfect world, we would prefer to implement microservices to be stateless. This stateless approach eliminates a lot of problems towards maintaining the storage for the applications data. However, we are not in a perfect world. At most time, applications need to deal with data and keep them on storage for long term references. We need persistent storage solution so that the applications data can survive containers (or systems) restart or crash. Kubernetes provides this type of storage support in the concept of volumes. We are going to look at how can we configured storage for Kubernetes on Raspberry Pi 4.